Home / 7,215.81-10,827.76-3,320.52

Finding the Fourth Proportional to 7,215.81, 10,827.76 and 3,320.52

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Solution

The fourth proportional to 7,215.81, 10,827.76 and 3,320.52 is: 4,982.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.81 : 10,827.76 = 3,320.52 : x
  2. Step 2: Convert to fraction form
    7,215.81/10,827.76 = 3,320.52/x
  3. Step 3: Cross multiply
    7,215.81x = 10,827.76 × 3,320.52
  4. Step 4: Simplify right side
    7,215.81x = 35,953,793.64
  5. Step 5: Solve for x
    x = 35,953,793.64/7,215.81
  6. Step 6: Final answer
    x = 4,982.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.